Current event 9= astronomy

Most popular stars
Stephen Ornes
April 1, 2009
http://www.sciencenewsforkids.org/2009/04/the-most-popular-stars-2/

For a very long time people have been looking at stars and wondering how those get there and what they are made of? People have been wondering who lives there? Stars are very old, stars have been around as long as the universe it self.

Stars all come in different colors white, yellow, blue and red. Some stars are bright and very visible  and others you can only see with tools like a telescopic etc. Stars move sometime in groups or sometime alone. Stars are sometimes surrounded by planets and others are not. Before World War 1 astronomers started to put the stars into two different groups dwarfs and giants. The sun is a dwarf, so then a giants must be hug because the sun is pretty big. 

   

 There is a dwarf called brown dwarf, brown dwarfs have only been found in 1995. Brown dwarfs arnt really brown they are almost totally black. Brown dwarfs also are not stars they are failed stars which astronomers call them.

So as you can see from the info above space is really interesting and in space it is totally different from earth and thats why i think so many people are interested in space and want to travel around space to encounter new things and learn new things as well.

To me space is totally awesome and i love how the stars look in to pictures, i also cant stop looking at stars through a telescopic. From me space is the coolest thing and i would love to learn more about space.  

Eclipse

Eclipses occur when the moon goes in front of the sun which stops the sun from hitting our earth so then the earth goes partially dark. One of the myths f why there was a eclipse from the Chinese and the Indians is that a hug snake attacked the moon and which caused the eclipse. Another myth is that god made the moon go infront of the sun and they would make it go always at noon.

A lunar eclipse is when the sun and the moon are on the other side of the earth, it also happens at night. Also it happens more often then a solar eclipse. A solar eclipse is when things sometimes line up perfectly and then u get a solar eclipse. During a solar eclipse the moon passes through the sun and then earth.

The next total eclipse will be August 21 , 2017 but the annular eclipse will be May 20, 2012. No you can not see a eclipse from every point of earth because it depends on where the moon and sun are colliding and so if it is on your side then you will be able to see it.

One way you can ruin your eyes because you are looking at a eclipse is you can ruin you retina. One way to not damage your eyes is wear the dark cheap glasses. The most safe way to look at a solar eclipse is to look at a projection. You can also use binoculars or a telescope to look at a eclipse.

Lunar Phases

What did you notice about the phases of the moon?  


The phases of the moon change as the moon and the earth rotate around the sun. There are 8 different phases New moon, waxing crescent, First quarter, waxing Gibbous, Full Moon, Waning Gibbous, Third Quarter and Waning Crescent.       




Why do we see different parts of the moon each night?


You see different parts because of how the moon rotates around the earth and then the earth around the sun. You see it differently also because of how the moon is having a reflection from the suns rays. 




What is a lunar month? 


A lunar month is when its goes from a New Moon to a Full Moon. It when the moon goes through all the phases of the moon.


What phases? 


There are many different phases, and different times when those phases show up. For example the full moon is totally white unlike a First quarter moon is a half white moon with the other side black. There are lots more that i listed in the question  before. 


What causes them??


The phases are caused when the earth and the sun are in different laces and times around the sun. It is caused by the suns rays and it is showed by the shadow that it makes. 

What i want to learn!!

In this unit i want to learn about the planets them selves, how they help each other and why are they important to how we live. I also want to know why is space helping us and why is each having live and none of the other planets?

In the unit i also want to learn about why did the living things on one planet go away, and why didnt the living things on earth go away as well?

Reason for the seasons

Reasons for the seasons!

How does the tilt of earths axis affect the light received by earth as it revolves around the sun? 

What causes the seasons???

Hypothesis: The reason there are different seasons because the earth rotates and there are different temperatures around the earth. 

1. If the Northern Hemisphere is winter, then on the southern part of the world it will be the most sunny and hot.The eastern and western parts will be a bit sunny as well. The are where the most concentrated light is at the north pole it almost 24 hour sunlight. 
2. During the summer and winter the equator is always getting some sort of light. The North pole on the other hand in summer it gets lots of sun but in the winter it doesn't get any sun at all. 
3. If the squares are getting longer i would infer that more heat will be able to go into one square unlike if it was shorter. 
4. The place where it is constantly coolest is the South pole because when we where doing the seasons lab you could see on the ball that the south pole was not getting a lot of light from the flash light. The warmest place is the equator or places close to it.
5. The time when the tooth picks shadow will be longest is when it is summer because the tooth pick is pointed towards the sun so it will have a longer and bigger shadow. In winter the tooth pick will be the shortest because the tooth pick is not really being recognized by the rays of the sun. 
6. Well if the sun is at some particular point where it is pointed to the sun. So that the sun can send its rays and then it will hit the earth straight on but then there is when the sun is not pointed at the sun and then the rays hit the earth but hit right off.

Analysis:

I think that my Hypothesis for this unit is correct and i think that we had a clear idea on what we where doing and how we did it. This lab taught me a lot about the earth and out planets how they move, how they interact with each other and how they all come together to build up space. 

Knowledge of waves

What do you know about waves now, then what you knew before?

• Now i know a lot more, because now i know more types of waves and how they work. Also how they move and how they effect in good ways and bad ways. Like irradiated waves, they can be bad because they can cause a lot of bad sicknesses. 
• Also there are X rays which i knew before because i broke my arm and then i saw my arm. Also i could see my brain.  
• The thing i most liked was the ultraviolet, because it was very interesting and it ad a lot of interesting facts to explain to me what it does and how it can help and not help. 
• I wouldnt change anything because i thought me and Mary did a very good job with the info and how we set it up. 

Food Radiation

Notes

• Food travels a long way to get to your plate. 
• Potatoes come from Maine and strawberries from Florida or Mexico. 
• Sometimes food makes people sick.
• Millions of Americans get sick every year from contaminated or spoiled food.
• A way to preventing you from getting sick is to treat your food by irradiation.
• Gamma rays are sent through fresh or frozen foods. 
• More then 40 countries dont allow food irradiation. 
• Radiation kills living cells. 
• It can destroy nutrients.
• Irradiation doesnt make food radioactive.
• Irradiated food must be labeled.

Questions 

1. In your own words explain the problem of food irradiation. 

The problem to me is that food irradiation is being taken lightly and not seriously. So more and more and eating irradiated food even thought they dont know its bad and what it can do. 

    3. You see two containers of a food at the supermarket. One is irradiated; one is not. The price s the same. Which would you buy?

I would buy the one that is not because it is healthier and i dont really trust irradiated food. I also dont really know what it does, so i would rather just stick with normal foods.